Detailed sailboat specifications and datasheets since 2015
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Océanis 300 Shoal draft

Sailboat specifications

The Océanis 300 is a 30’ (9.14m) cruising sailboat designed by Finot Conq Architectes (France). She was built between 1991 and 1994 by Bénéteau (France). The Shoal draft version is offered with a short keel fitted with large winglets. This configuration provides an interesting draft / low center of gravity / upwind performance trade-off.

Océanis 300's main features

Model
Océanis 300
Version
Shoal draft
Hull type
Monohull
Category
Cruising sailboat
Sailboat builder
Sailboat designer
Sailboat range
Country
France
Construction
GRP (glass reinforced polyester):
- Hull: Single skin fiberglass polyester
- Deck: Sandwich fiberglass polyester
Number of hulls built
About 250
First built hull
1991
Last built hull
1994
Appendages
Keel : wing keel
Helm
Single tiller
Rudder
Twin spade rudders
Unsinkable
No
Trailerable
No
Former French navigation category
2
Standard public price ex. VAT (indicative only)
N/A

Océanis 300's main dimensions

Overall length
31’ 1”9.47 m
Hull length
30’9.14 m
Waterline length
28’ 10”8.78 m
Beam (width)
10’ 7”3.23 m
Draft
4’ 5”1.35 m
Light displacement (MLC)
7055 lb3200 kg
Ballast weight
2315 lb1050 kg
Ballast type
Cast iron
French customs tonnage
8.62 Tx

Océanis 300's rig and sails

Upwind sail area
484 ft²45 m²
Downwind sail area
764 ft²71 m²
Mainsail area
215 ft²20 m²
Genoa area
269 ft²25 m²
Symmetric spinnaker area
549 ft²51 m²
I
 iFore triangle height (from mast foot to fore stay top attachment)
37’ 1”11.3 m
J
 iFore triangle base (from mast foot to bottom of forestay)
10’ 10”3.3 m
P
 iMainsail hoist measurement (from tack to head)
34’10.35 m
E
 iMainsail foot measurement (from tack to clew)
13’3.95 m
Rigging type
Sloop Marconi (in-mast furling mainsail) masthead
Mast configuration
Deck stepped mast
Rotating spars
No
Number of levels of spreaders
1
Spreaders angle
Swept-back
Spars construction
Aluminum spars
Standing rigging
1x19 strand wire continuous

Océanis 300's performances

HN (French rating)
 iHN or "Handicap Nationale" is an empirical rating system used in France allowing various monohulls, of different sizes and designs, to race each other fairly. It is particularly suitable for cruiser and cruiser-racer. Therefore, by comparing these values, we can have an indication of the relative speed of 2 boats.
15.0
Upwind sail area to displacement
 iThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds.

The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size.

Upwind: under 18 the ratio indicates a cruise oriented sailboat with limited performances especially in light wind, while over 25 it indicates a fast sailboat.
223 ft²/T20.72 m²/T
Downwind sail area to displacement
 iThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds.

The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size.
352 ft²/T32.7 m²/T
Displacement-length ratio (DLR)
 iThe Displacement Length Ratio (DLR) is a figure that points out the boat's weight compared to its waterline length. The DLR is obtained by dividing the boat's displacement in tons by the cube of one one-hundredth of the waterline length (in feet).
The DLR can be used to compare the relative mass of different sailboats no matter what their length:

a DLR less than 180 is indicative of a really light sailboat (race boat made for planning), while a DLR greater than 300 is indicative of a heavy cruising sailboat.
134
Ballast ratio
 iThe Ballast ratio is an indicator of stability; it is obtained by dividing the boat's displacement by the mass of the ballast. Since the stability depends also of the hull shapes and the position of the center of gravity, only the boats with similar ballast arrangements and hull shapes should be compared.

The higher the ballast ratio is, the greater is the stability.
33 %
Critical hull speed
 iAs a ship moves in the water, it creates standing waves that oppose its movement. This effect increases dramatically the resistance when the boat reaches a speed-length ratio (speed-length ratio is the ratio between the speed in knots and the square root of the waterline length in feet) of about 1.2 (corresponding to a Froude Number of 0.35) . This very sharp rise in resistance, between speed-length ratio of 1.2 to 1.5, is insurmountable for heavy sailboats and so becomes an apparent barrier. This leads to the concept of "hull speed".
The hull speed is obtained by multiplying the square root of the waterline length (in feet) by 1.34.
7.19 knots

Océanis 300's auxiliary engine

Engine(s)
1 inboard engine
Engine(s) power
24 HP
Fuel type
Diesel
Fuel tank capacity
17.2 gal65 liters

Océanis 300's accommodations and layout

Cockpit
Closed aft cockpit
Cabin(s)
2
Berth(s)
6
Head(s)
1
Freshwater tank capacity
44.9 gal170 liters
Maximum headroom
6’ 2”1.89 m
Galley headroom
5’ 10”1.78 m
Head headroom
5’ 10”1.77 m

Océanis 300's saloon

Maximum headroom
5’ 11”1.8 m

Océanis 300's fore cabin

Maximum headroom
5’ 10”1.76 m
Berth length
6’ 7”2 m
Berth width
5’ 1”1.55 m

Océanis 300's aft cabin

Maximum headroom
5’ 10”1.77 m
Berth length
6’ 7”2 m
Berth width (head/feet)
5’ 2”1.6 m / 3’ 11”1.2 m
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